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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (12): 26102-026102.doi: 10.7527/S1000-6893.2021.26102

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Research progress in modification and optimization of polyimide for space electricity transmission

WANG Jian1,2, XIAO Ruofan2, LIU Renying2, PING An2, LIU Jikui3, LI Qingmin1,2   

  1. 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;
    2. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;
    3. Beijing Institute of Control Engineering, Beijing 100089, China
  • Received:2021-07-13 Revised:2021-08-04 Published:2021-11-23
  • Supported by:
    National Natural Science Foundation of China (51929701)

Abstract: Polyimide has excellent resistance to high temperature gradients, high insulation and radiation resistance, and is widely used in spacecraft electrical transmission devices and equipment. At present, aerospace high-power electrical transmission scenarios such as space stations and space power stations put forward higher reliability requirements for polyimide materials. Therefore, it is urgent to reveal the damage effect of aerospace extreme environments on polyimide materials, so as to improve its overall performance. This article first introduces and reviews the application of polyimide in spacecraft electrical transmission equipment. Then summarizes the different damage characteristics and failure mechanisms of polyimide in charge and discharge effects, corona discharge effects, atomic oxygen erosion effects and extreme temperature environments. Existing modification control methods and gradient design and preparation methods are analyzed. Limitations in current research on modification control and gradient insulation optimization of polyimide materials for high-voltage and high-power electrical transmission of existing spacecraft are also discussed, and the possible effective solutions are given.

Key words: polyimide, charge-discharge effect, material modification, functionally graded material, insulation optimization

CLC Number: